An ED official said the agency would “like to examine Mithun in connection with certain financial transactionswiththe Saradha Group”.

ED sources said the agency was in possession of documents that suggested that Rs 2 crore had been transferred from a Saradha account to a bank account of Mithun.

ED officials said they were yet to get any evidence suggesting that Mithun had been appointed as the brand ambassador of the Saradha Group.

“It is not illegal to be a salaried brand ambassador. But we are yet to find any evidence of Mithun working for the Saradha Group. He did not endorse any of the company’s schemes or products. In that case, we would like to know why he got financial benefits from Saradha,” the ED officer said.

Sources said the summons had been sent to Mithun’s registered addresses in Mumbai and Ooty via speed post.

Sudipta grilled

The CBI today interrogated Saradha chairman Sudipta Sen to find out how he had floated so many companies within a very short span of time and who all had helped him do so, sources in the agency said.

This move, the sources said, was aimed at probing the “larger conspiracy” behind the default scam.

“We have mentioned our preliminary findings in three Saradha-related FIRs we have filed in Bengal. All interrogations now are aimed at finding out more about the facts mentioned in the FIRs,” a senior CBI officer said.

In one of the FIRs, the CBI has said Sen, in connivance with the other accused, had floated “more than 160 companies with an intention to divert funds within a span of 1-2 months — January 2011-February 2011”.

Sen’s son Subhojit, who was arrested by the Enforcement Directorate in April, was released on bail today.